<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>3.列表过滤</title>
    <!--  引入Vue  -->
    <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
    <!--  准备好一个容器  -->
    <div id="root">
        <h2>人员列表</h2>
        <input type="text" placeholder="请输入名字" v-model="keyWord">
        <ul>
            <li v-for="p in filPersons" :key="p.id">
                {{p.name}}-{{p.age}}--{{p.sex}}
            </li>

        </ul>
    </div>
</body>

<script type="text/javascript">
    //用watch实现
    /*new Vue({
        el: '#root',
        data: {
            keyWord: '',
            persons: [
                {id: '001', name: '马冬梅', age: 18, sex: '女'},
                {id: '002', name: '周冬雨', age: 24, sex: '女'},
                {id: '003', name: '周杰伦', age: 30, sex: '男'},
                {id: '004', name: '温兆伦', age: 30, sex: '男'}
            ],
            filPersons: []
        },
        watch: {
            keyWord: {
                immediate: true,
                handler(newValue) {
                    this.filPersons = this.persons.filter((p) => {
                        return p.name.indexOf(newValue) !== -1
                    })
                }
            }
        }
    })*/

    //用computed实现
    new Vue({
        el: '#root',
        data: {
            keyWord: '',
            persons: [
                {id: '001', name: '马冬梅', age: 18, sex: '女'},
                {id: '002', name: '周冬雨', age: 24, sex: '女'},
                {id: '003', name: '周杰伦', age: 30, sex: '男'},
                {id: '004', name: '温兆伦', age:30, sex: '男'}
            ]
        },
        computed: {
            filPersons() {
                return this.persons.filter((p) => {
                    return p.name.indexOf(this.keyWord) !== -1
                })
            }
        }
    })
</script>
</html>